Method for increasing the molecular weight of diorganopolysiloxa

Details Method for increasing the molecular weight of diorganopolysiloxa Method for increasing the molecular weight of diorganopolysiloxa

1985-11-18

1986-08-19

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

C07F 708

Patent

active

046071156

ABSTRACT:
Diorganopolysiloxanes may be polymerized to increase their molecular weight by heating the siloxane in the presence of a quaternary phosphonium hydroxide, in which one of the substituents on the phosphorus atom of the phosphonium cation is a monovalent radical containing carbon, hydrogen and silicon atom(s) and possibly siloxane oxygen atoms(s) and the three remaining substituents on the phosphorus atom are the same or different hydrocarbon radicals that are free of aliphatic carbon-carbon multiple bonds.

REFERENCES:
patent: 2759008 (1956-08-01), Dunham et al.
patent: 2883366 (1959-04-01), Kantor et al.
patent: 3398117 (1968-08-01), Baronnier et al.
patent: 3398118 (1968-08-01), Baronnier et al.
patent: 4008261 (1977-02-01), Brown et al.

Affiliated with

Also associated with

Rating

Method for increasing the molecular weight of diorganopolysiloxa does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for increasing the molecular weight of diorganopolysiloxa, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for increasing the molecular weight of diorganopolysiloxa will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-394724